Aluminum die casting Bicycle accessory. 1.Alu. die-casting part. USA standard 355/356 ... .2. The surface finishing :chem-film,painting.3. Components for bicycle.Detail pictures:Facilities: From 25T to 125T stamping machines; spinning ... usage of material involves many types, such as Stainless steel, Aluminum, Brass, Bronze. SGCC, SECC, and SPCC, etc. If you have ...